Preservative paint



Units STATES ATENT QFFIcE.

THOMAS J. CI'IILDERSON, OF PENSACOLA, FLORIDA.

PRES ERVATIVE. PAINT.

SIECIFICATION forming part of Letters Patent No. 552,418, dated December31, 1895.

Application filed October 23, 1895. $erial No. 566,640. (No specimens.)

{ useful Improvements in Composition Paints for Preserving \Vood; and Ido hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

My invention relates to a composition paint.

for preserving lumber against the terredo, and especially lumber whichis exposed to the action of watersuch as piles, bridges, &c.; and itconsists of the following ingredients combined in the followingproportions for one gallon of the composition, to wit: onehalf pound offinely-pulverized pingillark, seven pounds of mgtalljcpaint, threequarts boiled linseed-9H, one twenty-fifth part of an ounce of s'ulphatepf strychnine, and one-half pint of turpeptine These ingredientsare mixed in the following manner: The turpentine and strychnine arebrought together and agitated until the strychnine is thoroughlydissolved. Into this mixture stir the pulverized bark until thoroughlymixed, and into this latter mixture add the linseed-oil and metallicpaint in the proportions above stated and thoroughly agitate the entiremass until they have completely commingled, when the paint will be readyfor application.

I regard the use of finely-pulverized pine bark as a very importantingredient in my composition paint, as it is not only a preventiveitself against the entrance of the terredo, but also holds thestrychnine.

I have experimented with the paint without the use of the pine bark, andI have discovered that water will eventually wash the strychnine out ofthe wood and destroy the usefulness of the paint as a preventive againstthe entrance of worms. It is well known to persons living upon theseashore that pine logs or pine piles covered with bark will not beentered by worms as long as the bark remains upon them, and it was froma knowledge of this fact that I conceived the idea of comminuting thepine bark so as to form a very fine powder, so that it could bethoroughly mixed with the paint and easily applied with a brush to thedressedwood surfaces to be covered. The porous condition of the pinebark enables it to retain the paint and the strychnine, and also to actas a deterrent to the entrance of the worms. Pine bark differs from anyother bark in that it is a preventive against the entrance of theterredo, while other barks are not.

WVhat I claim, and desire to secure by Letters Patent, is

The herein described composition of matter to be used for preservingwood exposed to the action of water, consisting of pulverized pine bark,metallic paint, linseed oil,

strychnine and turpentine in substantially the proportions specified.

In testimony whereof I hereunto affix my signature in presence of twowitnesses.

THOMAS J. CHILDERSON.

iVitnesscs A. O. BLOUNT, Jr., LEE DANIELL.

